You must provide an updateQuery function when using fetchMore with a no-cache fetch policy.

[username14415]

Issue Description

Why useQuery with no-cache requires updateQuery?
I get You must provide an updateQuery function when using fetchMore with a no-cache fetch policy. using this code:

  const { loading, fetchMore } = useQuery(GET_MESSAGES_QUERY, { variables: { messenger_chat_id: 1 }, fetchPolicy: "no-cache", onCompleted: handleCompleted, onError: handleError });

    const fetch = await fetchMore({
      variables: {
        before: 200,
      },
    });
 

Link to Reproduction

Reproduction Steps

No response

@apollo/client version

3.12.4

[triagster]

Related issues:

• fetchMore and updateQuery vs update #1768

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[jerelmiller]

Hey @username14415 👋

Please see this this section of the docs which explains the error more in-depth.

tl;dr; because no-cache doesn't write to the cache, we don't know how you want to merge the results from the paginated response returned from fetchMore with your existing response. Some might want to do a full replacement. Others might want it stored in a single list. We require updateQuery for this reason.

[jerelmiller]

I'm going to go ahead and close this, but feel free to respond if you have more questions. Thanks!

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